A106 GrB是美标的材料号,材料标准可查阅ASTM A106,或查阅ASME SA-106/SA-106M (SPECIFICATION FOR SEAMLESS CARBON STEEL PIPE FOR HIGH- TEMPERATURE SERVICE)。A106 Gr B大致相当于国标30号钢管子尺寸可查阅ASME B 36.10M Welded and Seamless Wrought Steel Pipe